org.apache.camel.util.component

Class AbstractApiConsumer<E extends Enum<E> & ApiName,T>

java.lang.Object

org.apache.camel.support.ServiceSupport

org.apache.camel.impl.DefaultConsumer

org.apache.camel.impl.ScheduledPollConsumer

org.apache.camel.util.component.AbstractApiConsumer<E,T>

All Implemented Interfaces:

Runnable, Consumer, PollingConsumerPollingStrategy, RouteAware, Service, ShutdownableService, StatefulService, SuspendableService, PropertiesInterceptor, PropertyNamesInterceptor, ResultInterceptor

public abstract class AbstractApiConsumer<E extends Enum<E> & ApiName,T>
extends ScheduledPollConsumer
implements PropertyNamesInterceptor, PropertiesInterceptor, ResultInterceptor

Abstract base class for API Component Consumers.

Field Summary

Fields

Modifier and Type	Field and Description
protected AbstractApiEndpoint<E,T>	endpoint
protected org.slf4j.Logger	log
protected ApiMethod	method

Fields inherited from class org.apache.camel.support.ServiceSupport

shutdown, shuttingdown, started, starting, stopped, stopping, suspended, suspending

Constructor Summary

Constructors

Constructor and Description
AbstractApiConsumer(AbstractApiEndpoint<E,T> endpoint, Processor processor)

Method Summary

Methods

Modifier and Type	Method and Description
protected Object	doInvokeMethod(Map<String,Object> args) Invoke the API method.
void	interceptProperties(Map<String,Object> properties) Intercept method invocation arguments used to find and invoke API method.
void	interceptPropertyNames(Set<String> propertyNames) Intercept property names used to find API Method.
void	interceptResult(Object result, Exchange resultExchange) Do additional result exchange processing, for example, adding custom headers.
boolean	isGreedy()
boolean	isSplitResult()
protected int	poll() The polling method which is invoked periodically to poll this consumer
void	setSplitResult(boolean splitResult)
Object	splitResult(Object result) Split a complex result into result elements.

Methods inherited from class org.apache.camel.impl.ScheduledPollConsumer

afterPoll, beforePoll, doShutdown, doStart, doStop, doSuspend, getBackoffCounter, getBackoffErrorThreshold, getBackoffIdleThreshold, getBackoffMultiplier, getDelay, getInitialDelay, getPollStrategy, getRunLoggingLevel, getScheduledExecutorService, getScheduler, getSchedulerProperties, getTimeUnit, isPollAllowed, isPolling, isSchedulerStarted, isSendEmptyMessageWhenIdle, isStartScheduler, isUseFixedDelay, onInit, processEmptyMessage, run, setBackoffErrorThreshold, setBackoffIdleThreshold, setBackoffMultiplier, setDelay, setGreedy, setInitialDelay, setPollStrategy, setRunLoggingLevel, setScheduledExecutorService, setScheduler, setSchedulerProperties, setSendEmptyMessageWhenIdle, setStartScheduler, setTimeUnit, setUseFixedDelay, startScheduler

Methods inherited from class org.apache.camel.impl.DefaultConsumer

createUoW, doneUoW, getAsyncProcessor, getEndpoint, getExceptionHandler, getProcessor, getRoute, handleException, handleException, setExceptionHandler, setRoute, toString

Methods inherited from class org.apache.camel.support.ServiceSupport

doResume, getStatus, getVersion, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isStoppingOrStopped, isSuspended, isSuspending, resume, shutdown, start, stop, suspend

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.camel.SuspendableService

isSuspended, resume, suspend

Methods inherited from interface org.apache.camel.Service

start, stop

Field Detail

log

protected final org.slf4j.Logger log

endpoint

protected final AbstractApiEndpoint<E extends Enum<E> & ApiName,T> endpoint

method

protected final ApiMethod method

Constructor Detail

AbstractApiConsumer

public AbstractApiConsumer(AbstractApiEndpoint<E,T> endpoint,
                   Processor processor)

Method Detail

isGreedy

public boolean isGreedy()

Overrides:

isGreedy in class ScheduledPollConsumer

poll

protected int poll()
            throws Exception

Description copied from class: ScheduledPollConsumer

The polling method which is invoked periodically to poll this consumer

Specified by:

poll in class ScheduledPollConsumer

Returns:

number of messages polled, will be 0 if no message was polled at all.

Throws:

Exception - can be thrown if an exception occurred during polling

interceptPropertyNames

public void interceptPropertyNames(Set<String> propertyNames)

Description copied from interface: PropertyNamesInterceptor

Intercept property names used to find API Method. Used to add any custom/hidden method arguments, which MUST be provided in interceptProperties() override.

Specified by:

interceptPropertyNames in interface PropertyNamesInterceptor

Parameters:

propertyNames - argument names.

interceptProperties

public void interceptProperties(Map<String,Object> properties)

Description copied from interface: PropertiesInterceptor

Intercept method invocation arguments used to find and invoke API method. Can be overridden to add custom/hidden method arguments.

Specified by:

interceptProperties in interface PropertiesInterceptor

Parameters:

properties - method invocation arguments.

doInvokeMethod

protected Object doInvokeMethod(Map<String,Object> args)

Invoke the API method. This method can be overridden, for example to synchronize API calls for thread-unsafe proxies. Derived class MUST call super.doInvokeMethod() to invoke the API method.

Parameters:

args - method arguments from endpoint parameters.

Returns:

method invocation result.

splitResult

public Object splitResult(Object result)

Description copied from interface: ResultInterceptor

Split a complex result into result elements.

Specified by:

splitResult in interface ResultInterceptor

Parameters:

result - API method invocation result

Returns:

either the same result if it cannot be split, or an array object with split results

interceptResult

public void interceptResult(Object result,
                   Exchange resultExchange)

Description copied from interface: ResultInterceptor

Do additional result exchange processing, for example, adding custom headers.

Specified by:

interceptResult in interface ResultInterceptor

Parameters:

result - result of API method invocation.

resultExchange - result as a Camel exchange, may be a split result from Arrays or Collections.

isSplitResult

public final boolean isSplitResult()

setSplitResult

public final void setSplitResult(boolean splitResult)